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K' PUMP. l No. 408,547. Patented Aug. 6, 1889.

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i UNITED STATES PATENT UEEICE.

IRA C. N. SVEET, ,OF SANDVICI-I, ILLINOIS.

P UMP.

- SPECIFICATION forming part of Letters Patent No. 408,547, dated August6, 1889.

Application filed August 27, 1888. Serial No. 283,915. (No model.)

To all whom t may concern:

Be it knownthat I, IRA C. NSWEET, a citi- Zen of the United States ofAmerica, residing at Sandwich, in theV county of De Kalb and StateofIllinois, have invented a certain new and useful Improvement in Pumps,of which the following is a specification.

Referring to the accompanying drawings, in which similarreference-letters indicate the same or corresponding parts, Figure l isa vertical section of a pump containing my improvement, showing theair-valve locked out of action and the water-valve in position foraction. Fig. 2 is a section of the part containing my improvement,showing the watervalve looked out of action and the air-valve inposition for action. Fig. 8 is a bottom plan with the valves and keycomplete. Fig. 4 is a bottom plan with the key, water-valve, andaportion of the air-valve device removed. Fig. 5 is a plan showing theleather to which said Water-valve is attached. Fig. 6 is a modifiedform, shown insection, adapted to a singlevalve device with thevalve-seats on one and the same iiange, and Fig. 7 is anothermodification adapted to a single-valve device, with the valve-seatsarranged on separate flanges.

In a pending application for Letters Patent of the United States, filedby me the 5th day of May, A. D. 1888, Serial No. 272,938, I have shownand described a pump containing a barrel or stock A, a handle B, and ahollow plunger-rod C, supporting a chambered plunger C', and providedwith a shifting-valve C2, attached to an adj listing-rod C3, which eX-tends up through the hollow plunger-rod and is capable of being lockedin position by means of a set-screw c, said valve having a ieXible flapc', which enables it to act as an air-valve when adjusted against itsupper seat, the whole being adapted to raise water up from or forceairdown into a cistern, tank, or well, according as the valve is lockedagainst its upper seat or left free to rest upon its lower seat. Vithouta retaining-valve said pump is capable of forcing air only a few feetbelow the surface of the wat-erin the cistern or well, and the object ofmy present invention is to combine with it a suitable retaining-valveadapted to co-operate with the plunger both in raising Water and forcingdown air, and thereby to increase the capacity and effectiveness of thepump for the purposes of its use.

To. this end my present invention consists, primarily, in combining withsaid pumptube and double-actingplunger, or their functional equivalents,a double-acting retainingvalve device capable of being adjusted orshifted to correspond to the adjustment of the plunger-valve, so as toact under one adjustment as a. retaining-valve for t-he water raised,and under another adjustment as a retaining valve for the air forceddown through the pump-tube, and, secondarily, in the combination ofparts composing the adjustable double-actin g retaining-valve device.

The essential elements of my double-acting retaining valve device,consisting of two valve-seats, one facing upward, or in the direction of,the water-current, and the other downward, or in the direction of theair-current, two valves, one seating downward on the upwardly-facingvalve-seat to act as a watervalve and the other seating upward againsttheother valve-seat to act as an air-valve, with means for lockingeithervalve out of action, while leaving the other free to perform itsfunction. The two valves may be 'coupling between the upper and lowerparts of the pump-tube, and preferably provided with lugs and bolt-holesD', by which it may be conveniently secured to a stand or plank as asupport for the pump-stock A. This casting is provided with one or twointernal flanges, their number depending upon the form of valve deviceemployed.

my invention I have shown three forms of valve device, the firstconsisting of two separate valves with their seats arranged on oppositesides of a single iiange d, as indicated in Figs. l, 2, 3, 4, and 5, thesecond consisting of a double puppet seating against separate ToillustrateA IOO iianges d d', as represented in Fig, G, and the thirdconsisting of a single puppet seating against flanges, as shown in Fig.7.

Referring to Figs. l, 2, 3, 4, and 5, c indi- Cates the water-passage,and c a separate air passage through the iiange d; W, the water-valveseating down on ange d, preferably in the form of a clack, supported andhinged by a leather w, and provided with a tripping-toe t, as usual inpump-valves, and V the air-valve seating up against .fiange d, andpreferably composed of a strip of rubber or leather extending across theunder side of the air-passage and fastened at its ends to the flange d,as seen more clearly in Fig, 4. When this form of air-valve is used, Ire-enforce its under side by a piece of metal, and for such purposeprefer to employ a crescentshaped strip V', thickened at its middlebetween the dotted lines seen in Fig. 3 and loosely fastened at its endsto the under side of flange d by screws v r. Under both valves extends atransverse adjusting or shifting key M, the inner end of which may becentered in a lug f dependent from the iiange (l, and the outer end ofwhich is centered in a large screw-hole formed through the side wall ofthe casting D, as shown, the key being provided with a screw-thread totightly tit the hole. This key, in the form here shown, is constructedwith two eccentric portionsto wit, one (indicated at m) having a slightdegree of eccentricity to act in connection with the valve V V', and theother (represented at m) having a larger degree of eccentricity, andpreferably in the form of a crank-arm to act in connection with thevalve IV. A link L depending from the valve XV extends around thecrank-arm m', and is of such length that when said arm is turned up itwill leave said valve free to rise and fall, but when turned down willlock the valve firmly to its seat.

y The eccentric m when turned down permits the valve V V to rise andfall, but when turned up locks it iirmly to its seat. Both eccentricsare arranged at the same side of the key, so that when either is inposition to lock its appropriate valve the other will be in suchposition as to leave its valve free; hence; by turning the key halfround either valve maybe brought into position for action and the otherlocked out of action, and thus the device may be at will adjusted to actas a water-valve or an air-valve. The size of the screw-hole in thecasting D should be such as to permit the introduction of the eccentricportion of the key through it.

The crescent-shaped plate V may be inserted between the key and theflange (Z after the key is in place and its ends then secured by screwsextending into theunder side of the ila-nge.

In the forms represented in Figs. 6 and 7 both valves are combined in asingle adjustable valve device acting as a combined puppet and flapvalve. In the double puppet (shown in Fig. G) the flap V is arrangedaround the upper edge of that plate which seats upwardthe lower plate orend of the valve device, as there shown--and the key M may be insertedthrough a slot in the connecting-web between the two plates, in whichcase the connectingweb performs the function of the link L. In thesingle puppet (shown in Fig. 7) the iiap is also arranged around theupper edge of the valve-plate, and in this case the eccentric may bearranged above the valves, if preferred. In either form the, valves mustbe properly guided in the manner usual with puppetvalves, and the slotin which the lcrank-arm works must be so proportioned that the crankarm,when turned up, will hold the air-valve in the proper relation to itsseat and the was ter-valve away from its seat, and when turned down,will allow the water-valve to seat and limit its upward movement so thatthe airvalve cannot become seated. In the puppet valve construction theeccentric m of Figs. l, 2, 3, 4, and 5 becomes unnecessary and isomitted. v

From the above description and explanation it will readily be seen thatthe essential principle of my retaining-valve device consists incombining t-wo oppositelyseating valves with means for locking either atwill out of action while leaving the other free, and that such device iscapable of acting as a water-valve in co-operation with any ordi narypump-plunger, and both as a water and air valve in co-operation with thedouble-acting plunger described in my said pending application, or withany other plunger or combination of plungers adapted to be employed atone time for raising water up and at another time for forcing air downthrough a pump-tube. It is also obvious that my invention, in its broadsense, is independent of the form and arrangement of the structuraldetails, which may be greatly varied without departing therefrom, andthat it may be elnployed in connection with any form of force or liftpump operated with a reciprocating plunger.

Having thus described the principle of my invention and the best formsin which I have contemplated its practical application, what I claim asnew, and desire to secure by Letters Patent, is-

In a lift or force pump operated by a plunger, two retaining-valves, onea water and the other an air valve, in combination with a key or armextending through the pump tube or cylinder and adapted to lock eithervalve at will out of action as a valve while leaving the other free toact, substantially as described.

IRA C. N. SXVEET.

\Vitn esses:

HARRY BITNER, W. M. HILL.

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